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Myford change wheels

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Twf24/04/2022 10:41:03
32 forum posts
3 photos

My Super 7 was retrofitted with the quick change gearbox after purchase, however I still have a box full of change wheels (and the original non-gearbox side cover)

Am I correct in thinking that these change wheels are rendered completely redundant by the Quick Change Gearbox? I am having a good tidy up and clearout of anything I deem surplus!!

Pete Rimmer24/04/2022 10:43:33
1255 forum posts
69 photos

Not completely redundant but most of them will not be needed in normal work.

Sell them - they fetch reasonable money.

Hopper24/04/2022 10:52:21
6613 forum posts
347 photos

It depends on what you might want to ever do with the lathe in the future. The gearbox offers only a limited range of threads it can cut. With a full set of change wheels, you can set the train between the spindle and the gearbox so the lathe will cut just about all possible pitches of all threads such as BA, DP (worms), Mod (metric worms), metric, as well as the usual BS and UN pitches. I would keep the extra gears just in case. They don't take up much room.

Brian Wood;'s book Gearing of Lathes For Screwcutting has a chart of what gears are needed for what threads, with a gearbox, and it looks like they are all needed for something. It would pay to look at that chart, or similar from Myford etc before parting with any gears.

But if all you are ever going to do is the standard thread available on the gearbox, then no need for them.


Edited By Hopper on 24/04/2022 10:54:20

noel shelley24/04/2022 12:58:18
1435 forum posts
23 photos

An old poppet valve makes a good storage point for your change wheels ! UNLESS everything your going to do can be done on the QC box I would keep them, you may need them for odd threads, or simple dividing Etc ! You can always sell them in the future. Good Luck Noel.

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